Using the SCBs in a straight forward manner would only allow the driver to handle as many concurrent transactions as there are physical SCBs. Host Bus Adapter (HBA) Drivers To fully utilize the SCSI bus and the devices on it, requires much more concurrency. The solution to this problem is SCB Paging, a concept similar to memory paging. SCB paging takes advantage of the fact that Adaptec AIC-7896 PCI Ultra2 SCSI usually disconnect from the SCSI bus for long periods[…]
